Go price pure copper lighting today. A hand-hammered solid copper pendant this size starts around $1,500 new — if you can find one at all. This is the vintage article: 23 by 12 inches of real hammered copper with a beautiful aged patina (honest note: my photos run dark — in person the copper is warm and alive).
Three bulbs burn inside, and the light reaches your table through a perforated diffuser plate, so dinner gets a soft, dappled glow instead of bare-bulb glare. Made to hang over a dining table, and it will own the room from up there.